CN102468322A - Organic Light-emitting Display Device - Google Patents
Organic Light-emitting Display Device Download PDFInfo
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- CN102468322A CN102468322A CN2011100502771A CN201110050277A CN102468322A CN 102468322 A CN102468322 A CN 102468322A CN 2011100502771 A CN2011100502771 A CN 2011100502771A CN 201110050277 A CN201110050277 A CN 201110050277A CN 102468322 A CN102468322 A CN 102468322A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/854—Arrangements for extracting light from the devices comprising scattering means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/877—Arrangements for extracting light from the devices comprising scattering means
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
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Abstract
The invention relates to an organic light-emitting display device for suppressing external light reflection and reducing pixel blurring by disposing a scattering structure in a direction for extracting a light at a distance equal to or below an adjacent pixel pitch.
Description
Technical field
The present invention relates to organic light-emitting display device.
Background technology
Organic light-emitting display device is a self-luminous display device, and it not only has the advantage that the visual angle is wide, contrast is excellent, also has the fast advantage of response speed.
When watching image out of doors, because of may reduce the contrast and the visuality of organic light-emitting display device like stronger exterior light such as sunlights.Certainly, when indoor use, because of also reducing its visuality like indoor various exterior light such as fluorescent lamp.
In the past, for the reduction of the visuality that prevents to cause, at the Polarizer that has adhered to film type of organic display unit comprehensively by exterior light.Polarizer reflexes to outside phenomenon through preventing incidence of external light to organic light-emitting display device, the brightness of the exterior light that is reflected with reduction, thereby the reduction of the visuality that prevents to be caused by exterior light.
Yet owing to produce the Polarizer that is attached to the comprehensive film type of display unit through plural layers are engaged, therefore not only manufacture is complicated, cost is high, and thickness is thicker, realizes that thin-type display device has brought a difficult problem thereby give.
Summary of the invention
In order to solve aforesaid problem and other problems; The object of the present invention is to provide a kind of organic light-emitting display device; Said organic light-emitting display device is through being provided with diffusing structure to extracting direction of light on the position of the distance below the contiguous pel spacing, thereby suppresses external light reflection and reduce the phenomenon of pixel fuzzy (pixelblurring).
According to an aspect of the present invention, the present invention provides organic light-emitting display device, can comprise: first substrate; Second substrate relatively is provided with said first substrate; A plurality of pixels are arranged between said first substrate and said second substrate, comprise respectively: first electrode; Second electrode; And organic luminous layer, between said first electrode and said second electrode; And diffusing structure, be arranged on the direction of light that extraction is launched from said organic luminous layer in said a plurality of pixels; And be arranged at from said a plurality of pixels and be less than or equal to the position of the pel spacing between the neighborhood pixels in said a plurality of pixel.
According to another other characteristics of the present invention, said diffusing structure can be the resin molding that comprises a plurality of scattering particless.
According to other characteristics more of the present invention, said diffusing structure can be arranged at the light-emitting zone corresponding with a plurality of pixels.
According to other characteristics more of the present invention, can also comprise: light absorbing zone is arranged at and extracts on the said direction of light.
According to other characteristics more of the present invention, said light absorbing zone can be positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
According to other characteristics more of the present invention, said light absorbing zone can be arranged on the layer identical with said diffusing structure, can comprise said scattering particles.
According to other characteristics more of the present invention, can also comprise: black matrix, be arranged on the non-luminous region, said non-luminous region is the zone except the light-emitting zone corresponding with said a plurality of pixels.
According to other characteristics more of the present invention, said black matrix and said diffusing structure can alternately be arranged at said non-luminous region and said light-emitting zone respectively.
According to other characteristics more of the present invention, said light absorbing zone can be positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
According to other characteristics more of the present invention, said light absorbing zone can be arranged on the layer identical with said diffusing structure, can comprise said scattering particles.
According to other characteristics more of the present invention, said a plurality of pixels can be designed to different optical resonance distances, can also comprise colored filter, and said colored filter is arranged at and the corresponding light-emitting zone of said a plurality of pixels.
According to other characteristics more of the present invention, said a plurality of pixels can be according to the resonance distance that has designed, makes from the light transmission of the particular color of said organic luminous layer emission; Said a plurality of pixel has colored filter respectively, and wherein said colored filter has the particular color that sees through.
According to other characteristics more of the present invention, said colored filter can be positioned at the position nearer than the position that is provided with said diffusing structure with respect to said organic luminous layer.
According to other characteristics more of the present invention, said colored filter can be arranged on the layer identical with said diffusing structure, can comprise said scattering particles.
According to other characteristics more of the present invention, can also comprise: black matrix, be arranged on the non-luminous region, said non-luminous region is the zone except the light-emitting zone corresponding with said a plurality of pixels.
According to other characteristics more of the present invention, said black matrix and said diffusing structure can alternately be arranged at said non-luminous region and said light-emitting zone respectively.
According to other characteristics more of the present invention, said diffusing structure can comprise: a plurality of concaveconvex structures.
According to other characteristics more of the present invention, can also comprise: the planarization film of high index of refraction is arranged between said organic luminous layer and the said diffusing structure.
According to other characteristics more of the present invention, can also comprise: light absorbing zone is arranged at and extracts on the said direction of light.
According to other characteristics more of the present invention, said light absorbing zone can be positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
Organic light-emitting display device according to aforesaid present embodiment; Through diffusing structure being arranged on the position that distance is less than or equal to the pel spacing between the neighborhood pixels; Thereby suppress outside reflection of light, reduce the pixel blooming, thereby can improve the visuality of organic light-emitting display device.
Description of drawings
Fig. 1 is the fragmentary cross sectional view according to the organic light-emitting display device of first embodiment of the invention;
Fig. 2 is the sectional view of the pixel portions of detailed icon Fig. 1;
Fig. 3 is according to the diffusing structure position, shows the chart of the relative intensity of the light of from contiguous two pixels, launching according to the distance between two pixels;
Fig. 4 is the fragmentary cross sectional view according to the organic light-emitting display device of second embodiment of the invention;
Fig. 5 is the sectional view of the pixel portions of detailed icon Fig. 4;
Fig. 6 to Figure 12 is respectively the fragmentary cross sectional view according to the organic light-emitting display device of third embodiment of the invention to the nine embodiment.
Description of reference numerals
1-9: 10: the first substrates of organic light-emitting display device
21-29: diffusing structure 30:TFT layer
Electrode 42 in 41: the first: organic luminous layer
70: black matrix 80: high refraction planarization film
PX1, PX2, PX3: a plurality of pixel T1, T2, T3: thin-film transistor
Embodiment
Below, preferred embodiment of the present invention will be described in detail by reference to the drawing.
Fig. 1 is the fragmentary cross sectional view of the organic light-emitting display device 1 of preferred first embodiment according to the present invention, and Fig. 2 is the sectional view of the pixel portions of detailed icon Fig. 1.
As shown in Figure 1, the organic light-emitting display device 1 of preferred first embodiment comprises according to the present invention: first substrate 10; Diffusing structure 21; TFT layer 30 comprises a plurality of thin-film transistors, T1, T2, T3; And a plurality of pixels, PX1, PX2, PX3.
Comprise TFT layer 30 between diffusing structure 21 and a plurality of pixel PX1, PX2, the PX3, said TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3.Though shown in detail in figs in said accompanying drawing not, a plurality of thin-film transistor T1, T2, T3 can be electrically connected with a plurality of pixel PX1, PX2, PX3 respectively.And, in said accompanying drawing, illustrate TFT layer 30 and include only a plurality of thin-film transistor T1, T2, T3, but this being an exemplary embodiment, the present invention is not limited to this.That is, TFT layer 30 not only comprises a plurality of thin-film transistor T1, T2, T3, can also comprise various winding displacements (not shown).And, though shown in detail in figs in said accompanying drawing not,, beyond all doubt ground, TFT layer 30 can also comprise a plurality of dielectric films (not shown), makes and insulate between winding displacement and the winding displacement.
Be formed with a plurality of pixel PX1, PX2, PX3 on the TFT layer 30.Between contiguous pixel, a plurality of pixel PX1, PX2, PX3 are set at interval with predetermined pel spacing (pixel pitch).The pel spacing d12 that illustrates in the said accompanying drawing between the first pixel PX1 and the second pixel PX2 is identical with pel spacing d23 between the second pixel PX2 and the 3rd pixel PX3, but the present invention is not limited to this.That is, pel spacing d12 and pel spacing d23 can be different.
As shown in Figure 2, a plurality of pixel PX1, PX2, PX3 comprise respectively: first electrode 41; Second electrode 43; And organic luminous layer 42, between first electrode 41 and second electrode 43.
If voltage is applied to first electrode 41 and second electrode 43, then organic luminous layer 42, combine and form exciton (exciton) from first electrode 41 and second electrode, 43 injected electrons and hole (hole), through exciton, make organic luminous layer 42 luminous.
Organic light-emitting display device 1 according to present embodiment is the back side illuminated type that the light of from organic luminous layer 42, launching is extracted to first substrate, 10 sides.Thereby, can constitute first electrode 41 by transparency electrode, constitute second electrode 43 by reflecting electrode.With ITO, IZO, ZnO or In
2O
3Form first electrode 41 etc. transparent conductive material; Second electrode 43 can comprise: reflectance coating and hyaline membrane, and reflectance coating forms with more than one materials that are selected from Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr; Hyaline membrane is with ITO, IZO, ZnO or In
2O
3Form.
Organic luminous layer 42 can comprise low molecule organic matter or macromolecule organic.When using low molecule organic matter; Middle across organic luminous layer 42; With single structure or composite construction lamination hole injection layer (hole injection layer abbreviates HIL as) (not shown), hole transmission layer (hole transport layer abbreviates HTL as) (not shown), electron transfer layer (electron transport layer; Abbreviate ETL as) (not shown), electron injecting layer (electron injection layer abbreviates EIL as) (not shown) etc.; Operable organic material includes but not limited to: CuPc (CuPc:copper phthalocyanine), N; N '-two (naphthalene-1-yl)-N; N '-diphenyl-benzidine (N; N '-di (naphthalene-1-yl)-N, N '-diphenyl-benzidine abbreviates NPB as), three-oxine aluminium (tris-8-hydroxyquinoline aluminum) is (Alq3) etc. multiple.At this moment, PEDOT is used as hole injection layer uses, can and gather macromolecule organic matter such as fluorenes (Polyfluorene) series and be used as organic luminous layer 42 and use polyphenylene ethylene (Poly-Phenylenevinylene abbreviates PPV as) series.
Can comprise pixel definition film 44 between a plurality of pixel PX1, PX2, the PX3.Said pixel definition film 44 covers the edge of first electrode 41, through forming organic luminous layer 42 in the inner on the edge of opening, with the definition pixel.
As stated, according to the back side illuminated type organic light-emitting display device 1 of present embodiment, through letting from the light of organic luminous layer 42 emission, thereby present image in first substrate, 10 sides through first electrode 41, TFT layer 30, diffusing structure 21 and first substrate 10.
At this moment, also be incident to the inside of organic light-emitting display device 1 through first substrate 10 like exterior light such as sunlight or fluorescent lamps.The exterior light that is incident to the inside of organic light-emitting display device 1 is reflected by the thin-film transistor T1 of TFT layer 30, T2, T3 or various winding displacement, perhaps by first electrode 41 or 43 reflections of second electrode, thereby can penetrate to first substrate, 10 sides once more.The exterior light that is reflected can reduce the visuality of image thus to from organic luminous layer 42, launching and appear the light generation interference of image.
Yet comprise according to the organic light-emitting display device 1 of present embodiment: diffusing structure 21 is arranged between first substrate 10 and a plurality of pixel PX1, PX2, the PX3, thereby can reduces the exterior light that is reflected.That is, be incident to organic light-emitting display device 1 inner exterior light and be scattered structure 21 scatterings, cause the part of exterior light to be absorbed because of the total reflection prisoner is stranded in panel is inner.Thereby diffusing structure 21 is arranged at first substrate 10 and comprises between a plurality of pixel PX1, PX2, PX3 of organic luminous layer 42, through suppressing external light reflection, thereby can improve the visuality of organic light-emitting display device 1.
In addition; In organic light-emitting display device 1 according to present embodiment; Diffusing structure 21 not only is arranged between first substrate 10 that is used to extract light and a plurality of pixel PX1, PX2, the PX3; And diffusing structure 21 also can be arranged at the position that distance B is arranged from a plurality of pixel PX1, PX2, PX3, and wherein said a plurality of pixels comprise radiative organic luminous layer 42 respectively, and said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.This is fuzzy (pixel blurring) phenomenon of pixel for the emission image blur that prevents to be produced during away from organic luminous layer 42 when diffusing structure 21.
Fig. 3 is according to the diffusing structure position, shows the chart of the relative intensity of the light of from contiguous two pixels, launching according to the distance between two pixels.Transverse axis is represented the distance between two contiguous pixels, and the longitudinal axis is represented the relative intensity of light.
As shown in Figure 3, can learn if diffusing structure is arranged in when organic luminous layer 42 has the position of 1/4 times of distance of pel spacing: maximum two place A1, the light relative intensity of A3 and the light relative intensity of the place A2 of pixel boundary portion of relative intensity of the light of launching from two contiguous pixels has very big difference.That is, the observer is a benchmark with the place A2 of pixel boundary portion, can distinguish the image of two maximum place A1 of luminous intensity and A3 significantly.
If diffusing structure is positioned at when organic luminous layer 42 has the position of 1/2 times of distance of pel spacing; Consistent with above-mentioned situation about being positioned at when organic luminous layer 42 has the position of 1/4 times of distance of pel spacing, the luminous intensity in the place of pixel boundary portion and luminous intensity maximum has notable difference.
In addition; If diffusing structure is positioned at when organic luminous layer 42 has the position of the distance identical with pel spacing and can learns: compare with said two kinds of situation; Though the relative different of luminous intensity is less, the luminous intensity difference that exists is still for distinguishing the degree of image.
Yet can learn if diffusing structure is arranged in when organic luminous layer 42 has the position of 2 times of distances of pel spacing: maximum two place B1, the light relative intensity of B3 and the light relative intensity of the place B2 of pixel boundary portion of light relative intensity of launching from two contiguous pixels almost do not have difference.That is, the observer is a benchmark with the place B2 of pixel boundary portion, cannot distinguish the image of two maximum place B1 of luminous intensity and B3 significantly.
Thereby, in the organic light-emitting display device 1 according to present embodiment, through diffusing structure 21 being arranged at the position of distance B is arranged, thereby it is fuzzy to have reduced pixel from a plurality of pixel PX1, PX2, PX3, can improve the visuality of organic light-emitting display device 1 thus.Wherein, said a plurality of pixels comprise radiative organic luminous layer 42 respectively, and said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.
In addition, if when pel spacing d12 and pel spacing d23 between the neighborhood pixels are different, diffusing structure 21 can be arranged in from organic luminous layer 42 and be less than or equal to the position at the pel spacing of the minimum of pel spacing d12 and pel spacing d23.
And though the embodiment that does not distinguish light-emitting zone E and non-luminous region NE ground formation diffusing structure 21 that in said accompanying drawing, illustrates at first substrate 10 comprehensively, the present invention is not limited to this.That is, the person of outstanding talent is the free burial ground for the destitute undoubtedly, diffusing structure 21 can only be arranged on the light-emitting zone E, with the corresponding position of a plurality of pixel PX1, PX2, PX3 that comprises organic luminous layer 42.
And, though in said accompanying drawing, do not illustrate, also can comprise package parts, encapsulate a plurality of pixels with a plurality of pixels of protection from the moisture of outside and oxygen.
Below, with reference to figure 4 and Fig. 5 the organic light-emitting display device 2 according to second embodiment of the invention is described.
Fig. 4 is the fragmentary cross sectional view according to the organic light-emitting display device of second embodiment of the invention, and Fig. 5 is the sectional view of the pixel portions of detailed icon Fig. 4.Below, with and attach most importance to according to the difference between the organic light-emitting display device 1 of the foregoing description, the organic light-emitting display device 2 according to present embodiment is described, identical Reference numeral is represented identical inscape among the figure.
Like Fig. 4 and shown in Figure 5, the organic light-emitting display device 2 of preferred second embodiment comprises according to the present invention: first substrate 10; TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3; A plurality of pixel PX1, PX2, PX3; Diffusing structure 22; And second substrate 50.
If the organic light-emitting display device 1 according to the first above-mentioned embodiment is the back side illuminated type, then the organic light-emitting display device 2 according to present embodiment is the positive surface-emitting types that extract light to second substrate, 50 sides.Thereby a plurality of pixel PX1, PX2, PX3 comprise first electrode 41 respectively, as reflecting electrode; Second electrode 43 is as transparency electrode.The light of emission is used as first electrode, 41 reflections of reflecting electrode and penetrates to second substrate, 50 sides from organic luminous layer 42, thereby presents image.At this moment; The exterior light that is incident to the inside of organic light-emitting display device 2 is reflected by the thin-film transistor T1 of TFT layer 30, T2, T3 or various winding displacement; Perhaps by first electrode 41 or 43 reflections of second electrode; The exterior light that wherein is reflected produce to be disturbed emission from organic luminous layer 42 and the light that presents image, thereby can reduce the visuality of image.
Yet, comprise according to the organic light-emitting display device 2 of present embodiment: diffusing structure 22, be arranged between second substrate 50 and a plurality of pixel PX1, PX2, the PX3, thus can be through suppressing the visuality that external light reflection improves organic light-emitting display device 2.
In addition, according to the organic light-emitting display device 2 of present embodiment, through having the position of distance B that said diffusing structure 22 is set, thereby can prevent fuzzy (pixel blurring) phenomenon of pixel of image blur from a plurality of pixel PX1, PX2, PX3.Wherein, said a plurality of pixel comprises radiative organic luminous layer 42 respectively; Said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.
Below, with reference to the organic light-emitting display device 3 of figure 6 explanations according to third embodiment of the invention.
As shown in Figure 6, the organic light-emitting display device 3 of preferred the 3rd embodiment comprises according to the present invention: light absorbing zone 60; First substrate 10; Diffusing structure 23; TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3; And a plurality of pixel PX1, PX2, PX3.
If the organic light-emitting display device 2 according to said second embodiment is positive surface-emitting types, then the organic light-emitting display device 3 according to present embodiment is the back side illuminated types that extract light to first substrate, 10 sides.To be benchmark with the back side illuminated also below, the organic light-emitting display device according to the 4th embodiment to the nine embodiment will be described.But the present invention is not limited to this, beyond all doubt ground, and it can also be applicable to the front luminous organic display unit corresponding with each embodiment.
And; Organic light-emitting display device 3 according to present embodiment; Through said diffusing structure 23 being arranged at the position that distance B is arranged from a plurality of pixel PX1, PX2, PX3; Thereby fuzzy (pixel blurring) phenomenon of the pixel that can prevent image blur, wherein said a plurality of pixels comprise radiative organic luminous layer 42 respectively, said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.
Below, with reference to the organic light-emitting display device 4 of figure 7 explanations according to fourth embodiment of the invention.
In organic light-emitting display device 3, form light absorbing zone 60 and diffusing structure 23 respectively according to the 3rd embodiment; On the contrary, as shown in Figure 7, in the organic light-emitting display device 4 of preferred the 4th embodiment according to the present invention, light absorbing zone and diffusing structure 24 be combined intos.That is, light absorbing zone is formed on the layer identical with diffusing structure 24, and can comprise the scattering particles that is contained in diffusing structure.
As stated, according to the organic light-emitting display device 4 of present embodiment through light absorbing zone being incorporated into diffusing structure 24, thereby can reduce the number of components that constitutes organic light-emitting display device 4, simplify manufacturing process.
Below, with reference to the organic light-emitting display device 5 of figure 8 explanations according to fifth embodiment of the invention.
As shown in Figure 8, comprise according to the organic light-emitting display device 5 of present embodiment: light absorbing zone 60; First substrate 10; Diffusing structure 25; TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3; A plurality of pixel PX1, PX2, PX3; And black matrix 70.
Compare with the organic light-emitting display device 3 according to said the 3rd embodiment, present embodiment also comprises black matrix 70.Black matrix 70 is arranged at non-luminous region NE, and diffusing structure 25 is arranged at light-emitting zone.Be arranged at the non-luminous region NE that is provided with metal winding displacement etc. thick and fast through deceiving matrix 70, thereby can more effectively absorb the exterior light that is reflected.
Below, with reference to the organic light-emitting display device 6 of figure 9 explanations according to sixth embodiment of the invention.
In organic light-emitting display device 5, form light absorbing zone 60 and diffusing structure 25 respectively according to said the 5th embodiment; On the contrary, as shown in Figure 9, in organic light-emitting display device 6, light absorbing zone is incorporated into diffusing structure 26 according to sixth embodiment of the invention.That is, light absorbing zone is formed on the layer identical with diffusing structure 26, and can comprise the scattering particles that is contained in diffusing structure.
As stated, according to the organic light-emitting display device 6 of present embodiment through light absorbing zone being incorporated into diffusing structure 26, thereby can reduce the number of components that constitutes organic light-emitting display device 6, simplify manufacturing process.
Below, with reference to the organic light-emitting display device 7 of Figure 10 explanation according to seventh embodiment of the invention.
Shown in figure 10, the organic light-emitting display device 7 of preferred the 7th embodiment comprises according to the present invention: first substrate 10; Diffusing structure 27; Black matrix 70; TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3; A plurality of colored filter CF1, CF2, CF3; And a plurality of pixel PX1, PX2, PX3.
With different optical resonance distances, a plurality of pixel PX1 of design consideration present embodiment, PX2, PX3.For example, the first pixel PX1 can launch the light in red wavelength zone strongly through optical resonance; The second pixel PX2 can launch the light of blue wavelength region strongly through optical resonance; The 3rd pixel PX3 is the light of transmitting green wavelength region may strongly through optical resonance.The method of difference design optical resonance distance has: like the thickness according to each pixel difference design first electrode 41, perhaps be designed with the thickness etc. of machine luminescent layer 42 according to each pixel difference, the method that the those of ordinary skill of affiliated technical field has been known.
As stated, with a plurality of colored filter CF1, CF2, CF3, be separately positioned on the light extraction direction of a plurality of pixel PX1 with the design of different optical distance, PX2, PX3, distinguish corresponding position with a plurality of pixel PX1, PX2, PX3.
At this moment, a plurality of colored filter CF1, CF2, CF3 comprise: particular color, the resonance distance according to a plurality of pixel PX1, PX2, PX3 design sees through the particular color of emission from organic luminous layer 42.For example, red colored filter CF1 is arranged on through optical resonance on the first pixel PX1 of the light of launching the red wavelength zone strongly.
Red colored filter CF1 makes that the red light of emission sees through from organic luminous layer 42.And for the exterior light that is incident to organic light-emitting display device 7, this redness colored filter CF1 is included in blue light and green light in the exterior light through absorption, to absorb the part of exterior light.And in seeing through the exterior light of red colored filter CF1, red light is absorbed by the pixel PX1 that makes red light that the resonant structure of resonance take place, thereby can reduce outside reflection of light effectively on the whole.
In like manner, blue color colo(u)r filter CF2 is arranged on through optical resonance on the second pixel PX2 of the light of launching blue wavelength region strongly; Green tint colo(u)r filter CF3 is arranged on through optical resonance on the 3rd pixel PX3 of the light of transmitting green wavelength region may strongly.
And, according to the organic light-emitting display device 7 of present embodiment through diffusing structure 27 being set at light-emitting zone E, black matrix 70 being set at non-luminous region NE, thereby can more effectively reduce outside reflection of light.
And; According to the organic light-emitting display device 7 of present embodiment through said diffusing structure 27 being arranged at the position that distance B is arranged from a plurality of pixel PX1, PX2, PX3; Thereby fuzzy (pixel blurring) phenomenon of the pixel that can prevent image blur, wherein said a plurality of pixels comprise radiative organic luminous layer 42 respectively; Said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.
Below, with reference to the organic light-emitting display device 8 of Figure 11 explanation according to eighth embodiment of the invention.
In organic light-emitting display device 7, form a plurality of colored filter CF1, CF2, CF3 and diffusing structure 27 respectively according to the 7th embodiment; On the contrary, shown in figure 11, in the organic light-emitting display device 8 of preferred the 8th embodiment according to the present invention, colored filter is incorporated into diffusing structure 28.That is, colored filter is formed on the layer identical with diffusing structure 28, and can comprise the scattering particles that is contained in diffusing structure.
As stated, according to the organic light-emitting display device of present embodiment 8 through combining colored filter and diffusing structure 28, thereby can reduce number of components, the simplification manufacturing process that constitutes organic light-emitting display device 8.
Below, with reference to the organic light-emitting display device 9 of Figure 12 explanation according to nineth embodiment of the invention.
Shown in figure 12, the organic light-emitting display device 9 of preferred the 9th embodiment comprises according to the present invention: light absorbing zone 60; First substrate 10; Diffusing structure 29 comprises: concaveconvex structure 29a and concaveconvex structure 29b; High refraction planarization film 80; TFT layer 30 comprises a plurality of thin-film transistor T1, T2, T3; And a plurality of pixel PX1, PX2, PX3.
Diffusing structure 29 according to present embodiment comprises: concaveconvex structure 29a and concaveconvex structure 29b.In the present embodiment, concaveconvex structure 29a and concaveconvex structure 29b are formed between first substrate 10 and the high refraction planarization film 80.Can be with Nb
2O
5Be used as high refraction planarization film and use etc. high-index material.As present embodiment, comprise the diffusing structure 29 of concaveconvex structure 29a and concaveconvex structure 29b, identical with the above-mentioned diffusing structure that comprises scattering particles 21 to diffusing structure 28, suppress external light reflection.
And, according to the organic light-emitting display device 9 of present embodiment through light absorbing zone 60 is set on the one side of first substrate 10, thereby further suppress outside reflection of light.
And; According to the organic light-emitting display device 9 of present embodiment through said diffusing structure 29 being arranged at the position that distance B is arranged from a plurality of pixel PX1, PX2, PX3; Thereby fuzzy (pixel blurring) phenomenon of the pixel that can prevent image blur; Wherein said a plurality of pixel comprises radiative organic luminous layer 42 respectively, and said distance B is less than or equal to pel spacing d12, the pel spacing d23 between the neighborhood pixels.
Facility according to explanation; Can enlarge demonstration or dwindle and be presented at illustrated inscape in the said accompanying drawing; Therefore the present invention is not limited to the size or the shape of illustrated inscape in the accompanying drawings, and those skilled in the art can understand other embodiment that multiple modification and equivalence can be arranged thus.Thereby the claimed real scope of the present invention should be by the claimed technological thought decision of claim.
Claims (21)
1. organic light-emitting display device comprises:
First substrate;
A plurality of pixels are arranged on said first substrate, comprise respectively: first electrode; Second electrode; And organic luminous layer, between said first electrode and said second electrode; And
Diffusing structure is arranged on the direction of light that extraction is launched from said organic luminous layer in said a plurality of pixels; And be arranged at from said a plurality of pixels and be less than or equal to the position of the pel spacing between the neighborhood pixels in said a plurality of pixel.
2. organic light-emitting display device according to claim 1, wherein,
Said diffusing structure is the resin molding that comprises a plurality of scattering particless.
3. organic light-emitting display device according to claim 2, wherein,
Said diffusing structure is arranged at the light-emitting zone corresponding with a plurality of pixels.
4. organic light-emitting display device according to claim 2 also comprises:
Light absorbing zone is arranged at and extracts on the said direction of light.
5. organic light-emitting display device according to claim 4, wherein,
Said light absorbing zone is positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
6. organic light-emitting display device according to claim 4, wherein,
Said light absorbing zone is arranged on the layer identical with said diffusing structure, comprises said scattering particles.
7. organic light-emitting display device according to claim 4 also comprises:
Black matrix is arranged on the non-luminous region, and said non-luminous region is the zone except the light-emitting zone corresponding with said a plurality of pixels.
8. organic light-emitting display device according to claim 7, wherein,
Said black matrix and said diffusing structure alternately are arranged at said non-luminous region and said light-emitting zone respectively.
9. organic light-emitting display device according to claim 8, wherein,
Said light absorbing zone is positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
10. organic light-emitting display device according to claim 8, wherein,
Said light absorbing zone is arranged on the layer identical with said diffusing structure, comprises said scattering particles.
11. organic light-emitting display device according to claim 2, wherein,
Said a plurality of pixel design becomes different optical resonance distances, also comprises colored filter, and said colored filter is arranged at and the corresponding light-emitting zone of said a plurality of pixels.
12. organic light-emitting display device according to claim 11, wherein,
Said a plurality of pixel is according to the resonance distance that has designed, makes from the light transmission of the particular color of said organic luminous layer emission;
Said a plurality of pixel has colored filter respectively, and wherein said colored filter has the particular color that sees through.
13. organic light-emitting display device according to claim 12, wherein,
Said colored filter is positioned at the position nearer than the position that is provided with said diffusing structure with respect to said organic luminous layer.
14. organic light-emitting display device according to claim 12, wherein,
Said colored filter is arranged on the layer identical with said diffusing structure, comprises said scattering particles.
15. organic light-emitting display device according to claim 12 also comprises:
Black matrix is arranged on the non-luminous region, and said non-luminous region is the zone except the light-emitting zone corresponding with said a plurality of pixels.
16. organic light-emitting display device according to claim 15, wherein,
Said black matrix and said diffusing structure alternately are arranged at said non-luminous region and said light-emitting zone respectively.
17. organic light-emitting display device according to claim 1, wherein,
Said diffusing structure comprises: a plurality of concaveconvex structures.
18. organic light-emitting display device according to claim 17 also comprises:
The planarization film of high index of refraction is arranged between said organic luminous layer and the said diffusing structure.
19. organic light-emitting display device according to claim 17 also comprises:
Light absorbing zone is arranged at and extracts on the said direction of light.
20. organic light-emitting display device according to claim 17, wherein,
Said light absorbing zone is positioned at the position more farther than the position that is provided with said diffusing structure with respect to said organic luminous layer.
21. organic light-emitting display device according to claim 1 also comprises:
Second substrate relatively is provided with said first substrate, so that said a plurality of pixel is between said first substrate and said second substrate.
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KR20120047103A (en) | 2012-05-11 |
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